arne
/
cryptopp
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Whitespace check-in

pull/589/head
Jeffrey Walton 2018-02-20 04:18:58 -05:00
parent 2b2303bc75
commit d30afa4d01
No known key found for this signature in database
GPG Key ID: B36AB348921B1838
1 changed files with 46 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

92
rijndael-simd.cpp
View File

@ -662,60 +662,60 @@ void Rijndael_UncheckedSetKey_POWER8(const byte* userKey, size_t keyLen, word32*
const word32* rc, const byte* Se)
{
const size_t rounds = keyLen / 4 + 6;
GetUserKey(BIG_ENDIAN_ORDER, rk, keyLen/4, userKey, keyLen);
word32 *rk_saved = rk, temp;
GetUserKey(BIG_ENDIAN_ORDER, rk, keyLen/4, userKey, keyLen);
word32 *rk_saved = rk, temp;
// keySize: m_key allocates 4*(rounds+1) word32's.
const size_t keySize = 4*(rounds+1);
const word32* end = rk + keySize;
// keySize: m_key allocates 4*(rounds+1) word32's.
const size_t keySize = 4*(rounds+1);
const word32* end = rk + keySize;
while (true)
{
temp = rk[keyLen/4-1];
word32 x = (word32(Se[GETBYTE(temp, 2)]) << 24) ^ (word32(Se[GETBYTE(temp, 1)]) << 16) ^
(word32(Se[GETBYTE(temp, 0)]) << 8) ^ Se[GETBYTE(temp, 3)];
rk[keyLen/4] = rk[0] ^ x ^ *(rc++);
rk[keyLen/4+1] = rk[1] ^ rk[keyLen/4];
rk[keyLen/4+2] = rk[2] ^ rk[keyLen/4+1];
rk[keyLen/4+3] = rk[3] ^ rk[keyLen/4+2];
while (true)
{
temp = rk[keyLen/4-1];
word32 x = (word32(Se[GETBYTE(temp, 2)]) << 24) ^ (word32(Se[GETBYTE(temp, 1)]) << 16) ^
(word32(Se[GETBYTE(temp, 0)]) << 8) ^ Se[GETBYTE(temp, 3)];
rk[keyLen/4] = rk[0] ^ x ^ *(rc++);
rk[keyLen/4+1] = rk[1] ^ rk[keyLen/4];
rk[keyLen/4+2] = rk[2] ^ rk[keyLen/4+1];
rk[keyLen/4+3] = rk[3] ^ rk[keyLen/4+2];
if (rk + keyLen/4 + 4 == end)
break;
if (rk + keyLen/4 + 4 == end)
break;
if (keyLen == 24)
{
rk[10] = rk[ 4] ^ rk[ 9];
rk[11] = rk[ 5] ^ rk[10];
}
else if (keyLen == 32)
{
temp = rk[11];
rk[12] = rk[ 4] ^ (word32(Se[GETBYTE(temp, 3)]) << 24) ^ (word32(Se[GETBYTE(temp, 2)]) << 16) ^ (word32(Se[GETBYTE(temp, 1)]) << 8) ^ Se[GETBYTE(temp, 0)];
rk[13] = rk[ 5] ^ rk[12];
rk[14] = rk[ 6] ^ rk[13];
rk[15] = rk[ 7] ^ rk[14];
}
rk += keyLen/4;
}
if (keyLen == 24)
{
rk[10] = rk[ 4] ^ rk[ 9];
rk[11] = rk[ 5] ^ rk[10];
}
else if (keyLen == 32)
{
temp = rk[11];
rk[12] = rk[ 4] ^ (word32(Se[GETBYTE(temp, 3)]) << 24) ^ (word32(Se[GETBYTE(temp, 2)]) << 16) ^ (word32(Se[GETBYTE(temp, 1)]) << 8) ^ Se[GETBYTE(temp, 0)];
rk[13] = rk[ 5] ^ rk[12];
rk[14] = rk[ 6] ^ rk[13];
rk[15] = rk[ 7] ^ rk[14];
}
rk += keyLen/4;
}
#if defined(CRYPTOPP_LITTLE_ENDIAN)
rk = rk_saved;
const uint8x16_p mask = ((uint8x16_p){12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3});
const uint8x16_p zero = {0};
rk = rk_saved;
const uint8x16_p mask = ((uint8x16_p){12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3});
const uint8x16_p zero = {0};
unsigned int i=0;
for (i=0; i<rounds; i+=2, rk+=8)
{
uint8x16_p d1 = vec_vsx_ld( 0, (uint8_t*)rk);
uint8x16_p d2 = vec_vsx_ld(16, (uint8_t*)rk);
d1 = vec_perm(d1, zero, mask);
d2 = vec_perm(d2, zero, mask);
vec_vsx_st(d1, 0, (uint8_t*)rk);
vec_vsx_st(d2, 16, (uint8_t*)rk);
}
unsigned int i=0;
for (i=0; i<rounds; i+=2, rk+=8)
{
uint8x16_p d1 = vec_vsx_ld( 0, (uint8_t*)rk);
uint8x16_p d2 = vec_vsx_ld(16, (uint8_t*)rk);
d1 = vec_perm(d1, zero, mask);
d2 = vec_perm(d2, zero, mask);
vec_vsx_st(d1, 0, (uint8_t*)rk);
vec_vsx_st(d2, 16, (uint8_t*)rk);
}
for ( ; i<rounds+1; i++, rk+=4)
vec_vsx_st(vec_perm(vec_vsx_ld(0, (uint8_t*)rk), zero, mask), 0, (uint8_t*)rk);
for ( ; i<rounds+1; i++, rk+=4)
vec_vsx_st(vec_perm(vec_vsx_ld(0, (uint8_t*)rk), zero, mask), 0, (uint8_t*)rk);
#endif
}